Nanoindentation: Toward the sensing of atomic interactions

J. Fraxedas, S. Garcia-Manyes, P. Gorostiza, F. Sanz

    Research output: Contribution to journalArticleResearchpeer-review

    68 Citations (Scopus)


    The mechanical properties of surfaces of layered materials (highly oriented pyrolytic graphite, InSe, and GaSe) and single-crystal ionic materials (NaCl, KBr, and KCl) have been investigated at the nanometer scale by using nanoindentations produced with an atomic force microscope with ultrasharp tips. Special attention has been devoted to the elastic response of the materials before the onset of plastic yield. A new model based on an equivalent spring constant that takes into account the changes in in-plane interactions on nanoindentation is proposed. The results of this model are well correlated with those obtained by using the Debye model of solid vibrations.
    Original languageEnglish
    Pages (from-to)5228-5232
    JournalProceedings of the National Academy of Sciences of the United States of America
    Issue number8
    Publication statusPublished - 16 Apr 2002


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